11 Jun 2010 ZnSe protective windows feature our standard AR or DAR coating. Specifications Standards
Dimensional Tolerance Diameter: +0.000”-0.005”
Thickness: +0.005“-0.010”
Edge Thickness Variation (ETV) <= 3 arc minutes
Clear Aperture (polished) 90% of diameter
Surface Figure (power/irregularity) at 0.63µm 1.0 fringe/0.5 fringe
Scratch-Dig 20-10
AR Coating Reflectivity per Surface at 10.6µm < 0.20% |